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Chemical Engineering · Q155

Chemical Engineering Thermodynamics

Engineering and GATE · Chemical Engineering · question 155

Q155

Law of corresponding states says that

A.
Two different gases behave similarly, if their reduced properties (i.e. P, V and T) are same
Answer
B.
The surface of separation (i. e. the meniscus) between liquid and vapour phase disappears at the critical temperature
C.
No gas can be liquified above the critical temperature, howsoever high the pressure may be
D.
The molar heat of energy of gas at constant volume should be nearly constant (about 3 calories)

Answer: Option A

Solution

Answer: Option A
Solution:
Law of corresponding states : at same reduced properties all the gases behaves similarly. This is the statement of corresponding states and the reduced property is defined as the state variables of a fluid scaled by the state properties at its critical point.